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The inverted classroom or Flipped classroom is a methodology that allows the student to obtain information in a time and place that does not require the presence of the teacher, thus changing their traditional roles. The objective was to evaluate the impact of the implementation of the Flipped classroom as a teaching method for cognitive development in topic 3 of the chemical subject for Mechanical Engineering, at the Universidad de Oriente. The methodology was applied to 138 students in the 2021 and 2022 courses. Digital folders of topic 3 of the subject were prepared, containing videos obtained from YouTube, as well as orientation guides and other didactic materials made by the group of teachers. The techniques used were observation and survey. The results showed that the students were better prepared in the classes, more motivated with this learning methodology and they proposed to extend it to the other topics of the subject. The teaching results of topic 3 were better, compared to topics 1 and 2, in which the proposal was not applied. It is concluded that the methodology allows a greater acquisition of knowledge and encourages students to self-manage their learning and values such as responsibility. [ABSTRACT FROM AUTHOR]

Candida utilis (torula yeast) is the most widely used yeast as an animal feed supplement due to its high content of B vitamin, minerals and amino acids, therefore, in order to use it as food, studies have been carried out to increase its growth rate and production, highlighting the use of magnetic fields. This paper constitutes a review of the main characteristics of this yeast, its use as an alternative food worldwide and in Cuba, as well as the effect of the application of magnetic fields on its growth. The results of the review carried out show that Candida utilis is used in the production of unicellular protein, due to its ability to use a variety of carbon sources, being able to replace traditional protein sources. Although several investigations are reported in which the application of a static magnetic field causes an increase in the growth of fungi and yeasts, few reports were found in relation to the torula yeast, even so, it is found that low-intensity magnetic fields increase the cell biomass of this yeast. [ABSTRACT FROM AUTHOR]